AWS Lambda increases the file descriptor limit to 4,096 for functions running on Lambda Managed Instances

This article announces that AWS Lambda has increased the file descriptor limit to 4,096 for functions running on Lambda Managed Instances, a 4x increase from the previous 1,024 limit.

• File descriptor limit increased from 1,024 to 4,096 for Lambda Managed Instances
• Enables I/O intensive workloads like high-concurrency web services and data processing
• Supports larger connection pools and multi-concurrent request processing
• Lambda Managed Instances provide managed EC2 with routing, load-balancing, and auto-scaling
• Available in all AWS Regions where Lambda Managed Instances is generally available

This increase allows Lambda functions to handle more simultaneous I/O operations without hitting resource limits, improving support for demanding workloads.